00443naa a2200121 a 450000100080000000500110000800800410001910000200006024501500008026000090023070000180023977300640025718292682010-01-10       1964    bl ---       0--  u    #d1 aSILVA, A. R. da  aThe identification of physiologic races of Puccinia graminus var. tritici by wheat isogenic or substitution lines, carrying genes for resistance.  c19641 aCOELHO, E. T.  tWheat Information Service, Yokohamagn. 17, p. 33-34, 1964.